Year	% of GNI
1975	21.318431654665844
1976	21.125784192483707
1977	21.73001074246764
1978	22.097654903435277
1979	20.698901205609378
1980	18.40958454324922
1981	15.707097265735731
1982	15.831733886291003
1983	17.510302366548373
1984	19.3390705491452
1985	19.546304955508568
1986	20.70921805031836
1987	21.674249371182075
1988	21.893839987994717
1989	22.24765826725775
1990	23.450697584291873
1991	22.4466811909267
1992	22.861382630651796
1993	22.573536090825925
1994	22.16141418406115
1995	23.259356849120785
1996	23.39252830221726
1997	24.280187533537482
1998	23.80871452151803
1999	24.555790138152712
2000	25.53073838613892
2001	26.318070480101795
2002	25.5766452035792
2003	25.427907695910466
2004	25.776983195423732
2005	26.19690421896862
2006	27.315305398635296
2007	26.607075772389916
2008	26.591759962130098
2009	22.34357901787745
2010	24.231144014972266
2011	25.184150410336503
2012	25.173322897667823
2013	26.609511881781543
2014	27.98564610441542
2015	28.0140169768401
2016	28.836214174355604
2017	29.417614141105638
2018	29.07218044197773
2019	29.48932904376238
2020	29.623249842798447
2021	31.851567394400163
2022	36.05501089413322
2023	32.79252152555923